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A trivalent alkyl group, CH2CH2, obtained from glycerol by the removal of hydroxyl groups.
(Chemistry) (modifier) derived from glycerol by replacing or removing one or more of its hydroxyl groups: a glyceryl group or radical.
glyc•er•yl(ˈglɪs ər ɪl)
the trivalent group (C3H5)-3, derived from glycerol.